Installation, Operation & Maintenance Manual PZ-Series Sliding-Vane Truck Pumps for Refined Petroleum Products and Industrial Solvents Solutions beyond products... ORIGINAL INSTRUCTIONS ID107E Warning: (1) Periodic inspection and maintenance of Corken products is essential. (2) Inspection, maintenance and installation of Corken products must be made only by experienced, trained and qualified personnel. (3) Maintenance, use and installation of Corken products must comply with Corken instructions, applicable laws and safety standards (such as NFPA Pamphlet 58 for LP-Gas and ANSI K61.1-1972 for Anhydrous Ammonia). (4) Transfer of toxic, dangerous, flammable or explosive substances using Corken products is at user’s risk and equipment should be operated only by qualified personnel according to applicable laws and safety standards. PZ7 Model with Standard Bypass Valve
Warning: (1) Periodic inspection and maintenance of Corken products is essential. (2) Inspection, maintenance and installation of Corken products must be made only by experienced, trained and qualified personnel. (3) Maintenance, use and installation of Corken products must comply with Corken instructions, applicable laws and safety standards (such as NFPA Pamphlet 58 for LP-Gas and ANSI K61.1-1972 for Anhydrous Ammonia). (4) Transfer of toxic, dangerous, flammable or explosive substances using Corken products is at user’s risk and equipment should be operated only by qualified personnel according to applicable laws and safety standards.
PZ7 Model with Standard Bypass Valve
WarningInstall, use and maintain this equipment according to Corken’s instructions and all applicable federal, state, local laws and codes. Periodic inspection and maintenance is essential.
Corken One Year WarrantyCORKEN, INC. warrants that its products will be free from defects in material and workmanship for a period of one year from date of installation, provided that the warranty shall not extend beyond twenty-four (24) months from the date of shipment from CORKEN. If a warranty dispute occurs, the DISTRIBUTOR may be required to provide CORKEN with proof of date of sale. The minimum requirement would be a copy of the DISTRIBUTOR’S invoice to the customer.
CORKEN products which fail within the warrant period due to defects in material or workmanship will be repaired or replaced at CORKEN’s option, when returned, freight prepaid to CORKEN, INC., 3805 N.W. 36th St., Oklahoma City, Oklahoma 73112.
Parts subject to wear or abuse, such as mechanical seals, blades, piston rings, valves and packing, and other parts showing signs of abuse, neglect or failure to be properly maintained are not covered by this limited warranty. Also, equipment, parts and accessories not manufactured by CORKEN but furnished with CORKEN products are not covered by this limited warranty and the purchaser must look to the original manufacturer’s warranty, if any. This limited warranty is void if the CORKEN product has been altered or repaired without the consent of CORKEN.
All implied warranties, including any implied warranty of merchantability or fitness for a particular purpose, are expressly negated to the extent permitted by law and shall in no event extend beyond the expressed warrantee period.
CORKEN DISCLAIMS ANY LIABILITY FOR CONSEQUENTIAL DAMAGES DUE TO BREACH OF ANY WRITTEN OR IMPLIED WARRANTY ON CORKEN PRODUCTS. Transfer of toxic, dangerous, flammable or explosive substances using CORKEN products is at the user’s risk. Experienced, trained personnel in compliance with governmental and industrial safety standards should handle such substances.
Important notes relating to the European Union (EU) Machinery DirectivePumps delivered without electric motors are not considered as machines in the EU Machinery Directive. These pumps will be delivered with a Declaration of Incorporation. The fabricator of the machinery must assure and declare full compliance with this Directive before the machine in which the pump will be incorporated, or of which it is a part, is put into service.
Contacting the FactoryBefore you contact the factory, note the model number and serial number of your pump. The serial number directs us to a file containing all information on material specifications and test data applying to your specific pump. When ordering parts, the Corken service manual or Operations, Installation and Maintenance (IOM) manual should be consulted for the proper part numbers. ALWAYS INCLUDE THE MODEL NUMBER AND SERIAL NUMBER WHEN ORDERING PARTS.
The model and serial numbers are shown on the nameplate of the unit. Record this information for future reference.
Chapter 1—InstallationThe mechanical installation of the PZ-Series pump is a simple matter. A rotation arrow is located on the side of the pump so check the PTO to determine its direction of rotation. The PZ-Series pump will match either PTO rotation. Connect the drive shaft to the pump shaft that turns the pump in the direction of the arrow.
The PTO SELECTION is important. The pump requires a PTO with an average output speed of 500 to 700 RPM for maximum performance when the truck engine is operating at the proper speed to maintain oil pressure and water circulation.
THE DRIVESHAFT connecting the pump to the PTO should be of the “splined” or slip type. This type driveshaft permits the shaft to adjust for PTO movement and twisting of the truck frame. A fixed driveshaft transfers the forces directly into the pump and PTO and will shorten the life of both considerably. The yokes of the driveshaft universal joints must be positioned as shown on page 5, Figure 1. Improper positioning will soon wear them out and potentially destroy the bearings in the pump and PTO.
INLET PIPING should be as short as possible and at least the minimum diameter specified for the model with minimum restrictions so that the pressure drop is limited.
1 .1 The outlet piping should include the following:1. A pressure gauge should be installed in the pump
outlet or near it. A pressure gauge is necessary to determine the efficiency of your pumping system.
2. If a meter with an air eliminator is installed, never pipe the eliminator directly into the pump inlet piping or into the liquid part of the system at any point (refer to the meter installation manual).
3. The discharge piping should be at least the same size as the meter piping.
1 .2 Power Take-Off Drive SystemsProper pump operation and long life is directly dependent upon a good drive system. Many truck pumps utilize a power train consisting of shafts and universal joints from a power take-off shaft on the truck engine to the pump.
There are several basic principles that should be followed in laying out a PTO drive. These principles should not be violated to produce a workable power train that results in long pump life and reduced drive wear.
First, the driver shaft and the driven shaft must be parallel to one another within plus or minus one degree. Improper
Principles of the Sliding-Vane PumpThe PZ-Series pump is a special type of rotary positive displacement pump, known as a sliding vane pump.
The sliding vane pump has many of the positive displacement advantages of the gear pump, plus the ability to compensate for wear, and operate at a lower noise level.
The sliding vane pump consists of a rotor turning in a cam machined eccentrically in relation to the rotor; thereby displacing the liquid trapped between the rotor, cam and vanes. The PZ-Series pumps are made with vanes produced from advanced polymers which exhibit extremely low coefficients of friction. The vanes are self-adjusting for wear which gives the pump long life.
Exclusive Features of the PZ-Series PumpThe pumping of volatile liquids is one of the most difficult of all pumping jobs, and pumping from a delivery truck makes it even more difficult, so more attention must be given to the design and manufacturing of the pump and to its installation and operation.
In addition to being especially suited for handling volatile liquids, your PZ-Series pump has a number of features to help make it more easily operated and maintained.
The CASE and HEADS are made of Ductile Iron, not Cast Iron, for extra strength and toughness.
The VANES are manufactured of advanced polymers to provide excellent life and quiet operation. After long service, the vanes are simply and inexpensively replaced.
SIDEPLATES may be reversed for extended service life. The sideplates are easily replaced should the need arise.
THE MECHANICAL SEAL is designed for longer life under greater loads and may be inspected or replaced without disturbing the piping of the pump. No special tools are needed.
BEARINGS are heavy-duty roller type for long bearing life.
THRUST BEARINGS are heavy-duty needle roller type rated for 4,000 lbs.
NONMETALLIC VANE DRIVERS do not penetrate the vanes like the conventional steel vane drivers.
Available with adjustable internal BYPASS VALVE or optional AIR OPERATED VALVE (AOV) for high and low flow control.
4
alignment will cause jerking and back and forth “whip” to the pump shaft, thereby imparting a surging pulsation to the liquid flow, which results in noise, vibration and abnormal wear.
Second, the angle of the “floating’’ shaft should be within the limits for the particular equipment being used (usually a maximum of 15° at pump speeds up to 800 RPM). To ensure that shaft expansion or contraction does not distort the drive system, a splined slip joint should be placed between the two universal joints. The drive shaft should be of the “splined” or slip type to permit the shaft to adjust for PTO movement and twisting of the truck frame. A fixed drive shaft transmits the forces directly to the pump and PTO which will shorten the life of both considerably.
Third, the yokes of the drive shaft universal joints must be in a parallel position. Figure 1 on page 5 illustrates the proper arrangement of the yokes.
Improper installation of the U-joints will soon destroy them along with the bearings in the pump and PTO. Properly mounted, the second universal gives uniform motion to the drive shaft by compensating for the rotational error introduced by the first U-joint. An even number of universal joints (2, 4, 6 etc.) should always be used. An odd number of U-joints will cause unbalanced pump shaft rotation. This problem becomes greater with increased angularity.
Other points to consider include the proper sizing of the shaft components with a maximum horsepower load to be expected, good alignment of hanger bearings and proper pump coupling alignment.
Improper PTO systems account for a high percentage of truck pump failures. Always remember to disengage the clutch before shifting the PTO into gear. Shifting the PTO into gear without disengaging the clutch imparts an enormous shock on the PTO, drive shaft, pump and meter and will soon damage one or all of them.
For proper installation of pump drives, follow the rules listed below:
1. Driver shaft and pump shaft must be parallel, plus or minus one degree.
2. Operating angle of the “floating’’ shaft must be 15° maximum.
3. Universal yokes must be in line and parallel.
4. Splined slip joints must be used where needed.
5. Use an even number of universal joints.
6. Always use the least practical number of shafts.
Pump
“Floating” shaft withsplined slip joint
U-joint yokes must be inline and parallel
These shafts must be parallel
15° maximumoperating angle
Power take-off
Figure 1: Shaft alignment
PTO selection and drive system design is extremely important. The PTO should have an average output speed up to 800 RPM to maximize the performance of the PZ-Series pump when the truck engine is operating at the recommended speed.
The designer of the drive system must select a PTO drive shaft capable of meeting the torque requirements of the pumping system.
Chapter 2—OperationThe following steps should be performed for the initial pumping operation:
1. Close the shutoff valve on the end of the delivery hose.
2. Start the pump and cycle the nozzle open and closed to clear all air from the system.
3. Check the discharge pressure on the outlet of the pump. This pressure is typically set at 80 to 95 psi.
4. Standard Bypass Valve
For a standard bypass valve, locate the adjustment set screw under the adjustment set screw cap (see parts details on pages 18 and 19). Turn adjustment screw clockwise to increase pressure and flow. Turn counter clockwise to decrease pressure and flow.
Close nozzle and check bypass pressure. If too high, turn adjustment screw counter clockwise until desired pressure is reached.
With the hose nozzle open, adjust the pump bypass valve setting to the desired flow rate. Close the nozzle slowly and check the system pressure. CAUTION: DO NOT EXCEED A CLOSED NOZZLE PRESSURE OF 125 PSI.
Replace adjustment set screw cap with seal washer and tighten.
5. Air Operated Valve (AOV) assembly
For pumps equipped with an Air Operated Valve (AOV) assembly, air must be supplied from the truck air system via a flow sensing valve. Approximately 70 psi (4.8 bar) minimum air pressure is required to
5
properly operate the air operated valve. THE AIR PRESSURE MUST NOT EXCEED 125 psi (8.6 bar). The sensing valve should be installed in accordance with the diagram shown in Figure 2. This system depicts the additional use of a throttle control which is optional. All adjustments must be made at normal operating speeds.
5.1 Set the low pressure adjustment first by slowly closing the nozzle to relieve the air pressure in the AOV assembly.
5.2 Remove the adjustment stem cap and O-ring (see parts details on pages 20 and 21).
Use either a direct “Push” throttlerod or connected “Pull” with cable
Figure 2: Typical truck delivery system using an AOV.
5.3 Turn the low pressure adjustment bushing counterclockwise to decrease the bypass pressure and vice versa to increase the pressure (see parts details on pages 20 and 21).
5.4 Re-install the O-ring and adjustment stem cap and tighten securely.
5.5 Open and close the nozzle several times to ensure proper setting and repeatability.
5.6 Slowly close the delivery nozzle again to relieve the air pressure in the AOV assembly.
5.7 Remove the adjustment stem cap and O-ring.
5.8 Adjust the locknuts clockwise to decrease delivery flow rate and/or pressure and vice versa to increase the flow rate. NOTE: Make sure the locknuts are securely locked against each other before re-installing the adjustment stem cap and O-ring .
5.9 Slowly open the delivery nozzle and note delivery flow rate and/or pressure.
5.10 Repeat steps 5.7 through 5.9 until desired flow rate and/or pressure are achieved.
6. You may increase the speed of the pump as long as it increases the flow through the delivery nozzle. It is recommended to turn the pump at approximately 575 RPM for optimum performance. However, the pump can be safely turned to 800 RPM if system conditions permit.
WARNING
NOTE: If pump speed is increased, be certain the meter and piping system will handle the increased flow and pressure!
Chapter 3—Preventative MaintenanceYour PZ-Series pump requires regular maintenance and care like all mechanical equipment. A neglected or improperly repaired pump will result in premature failure and cause unsafe conditions. To promote product longevity and safety, maintenance must be performed by properly trained technicians. Make sure all safety systems are in place and the system pressure has been relieved before attempting ANY maintenance.
Pump Maintenance ScheduleMake sure the transfer hoses are not “kinked’’. A kinked hose can cause excessive pump discharge pressure. Always make sure your hoses are not out of date.
Daily MonthlyThree
Months
Lubricate bearings •
Inspect drive coupling •
Clean Inlet Strainer •
Check for leaks •
Inspect hose and fittings •
Figure 3
Bearing LubricationThere are two lubrication points in which to grease the pump bearings; one zerk per bearing cap located at opposite ends of the pump. Four grease relief and seal ventilation fittings have been provided, two at each end of the pump, to help prevent over greasing the bearings. Over greasing can cause seal failure if grease passageways are blocked in some way. Remove relief fittings or confirm free movement of relief prior to greasing bearings. Clean each fitting before lubricating the bearings. This practice helps to prevent foreign material contamination of the bearings and accidental overpressurization of the mechanical seals. Use only Ball Bearing Grease (MIL-G-10924C) with a temperature rating of -70°F.
6
Normal wear parts are the mechanical shaft seals, bearings, vanes, vane drivers and sideplates. All of these parts plus O-rings and grease seals are offered in the “repair kit.” Use only genuine Corken replacement parts when repairing your PZ-Series pump. Follow the instructions provided with the parts.
When it becomes necessary to repair your pump or remove it from the system, you must be absolutely certain that all product being pumped is bled from the pump and connected piping. Once all the product has safely been bled from the pump and connected piping, make certain no pressure is left in the system. SPECIAL CARE MUST BE TAKEN DURING THE BLEED DOWN PROCESS TO AVOID DANGER TO PERSONNEL AND PROPERTY IN THE AREA. Take your time in bleeding your system and make proper provisions to vent or capture the product in accordance with local regulations. ONLY A PROPERLY TRAINED INDIVIDUAL SHOULD BE ALLOWED TO BLEED A PUMPING SYSTEM.
Chapter 4—Disassembly and Assembly InstructionsDisassembly Instructions1. Truck engine must be turned off and PTO disengaged.
2. Bleed all product from the system as described above. NOTE: There is a 1/4" NPT connection in the bottom of the pump case that allows you to easily drain the pump.
3. Remove the PTO shaft or hydraulic drive motor, adapter, and coupling.
4. Remove the eight 7/16" head bolts from one head.
5. Slide head assembly off pump shaft ensuring the pump rotor-shaft remains in the pump.
6. Inspect the mechanical seal carbon face for scoring or pitting and discard if damaged. Ensure the rotor-shaft remains inside pump. NOTE: If rotor is pulled with head, it will disengage the seal assembly on the opposite side.
7. If the mechanical seal requires replacement, slide a screwdriver through the head assembly from the bearing cap and tap the stationary seal face out.
8. Remove the four 3/8” bolts from the bearing cap to gain access to the thrust bearing. Retain the bearing cap shims independently for each side of the pump. Inspect the thrust washers and needle roller assembly for scoring or pitting. Discard if damage found. Retain mounting ring for future use.
9. Remove the spiral snap ring in the pump head to facilitate removal of the main bearing. Inspect the
bearing rollers and inner race for scoring or pitting. Replace if damage is found. Retain the snap ring for future use. The main bearing can be easily removed by inserting a screwdriver through the head from the mechanical seal side and lightly tapping. Work the screwdriver around the inside perimeter of the bearing as the bearing is lightly pressed into the head.
10. Inspect inner grease seal and head O-ring for cuts or abrasions and remove and change if necessary.
11. Inspect the outer grease seal in the bearing cap for cuts or abrasions and remove if necessary.
12. Repeat steps 3 through 10 for remaining head assembly.
13. Using a bearing cap or flange bolt (3/8"), slide the sideplate off of the rotor-shaft while holding other end of rotor-shaft in place. Once removed, the rotor-shaft can be pulled slightly toward the remaining sideplate and allowed to rest within the pump case. Inspect the sideplates for wear. If sideplates are worn on both sides, discard for replacement.
14. Carefully remove the rotor-shaft assembly with the vanes and drivers by cupping the lower vanes in place. Inspect vanes and drivers for wear or abrasions. Replace if damage is found.
15. Inspect the rotor O.D. and cam inner surface for scoring or pitting. Should the condition arise, the pump should be completely replaced if severe scoring of the cam inner surface is discovered.
16. If you have the standard bypass valve, remove the bypass valve adjustment screw cap and turn the adjustment screw counterclockwise to relieve the spring tension. Remove the four 3/8" bolts from the bypass valve cap. Use caution as a small amount of spring tension will remain on the bypass valve spring before complete bolt removal. Inspect bypass valve, spring, and bypass valve cap O-ring for wear, abrasions, etc. Replace if damage is found.
17. If you have an Air Operated Valve (AOV), ensure the air supply pressure has been relieved and the supply line disconnected from the valve housing. Remove the outer cap and discard the O-ring from underneath. Remove the retainer ring and locknuts from the adjustment stem. Remove the four 3/8" bolts and lock washers from the bypass valve housing. Use caution as a small amount of spring tension may remain on the bypass valve spring. Carefully remove the AOV assembly from the pump along with the spring and valve.
Remove and discard the gasket and clean the gasket areas. Remove the two recessed-head machine screws and the diaphragm cover plate. Slide the diaphragm assembly out from the housing. Remove the vent plate from between the two diaphragms.
7
Inspect the diaphragms, spring, and valve for abrasions and replace if necessary.
Assembly Instructions1. Place three vanes into the upper three rotor-shaft slots.
Ensure the curved tip of each blade faces radially outward and all in the same direction of rotation.
2. While cupping these vanes in place, rotate the rotor shaft over 180° and install the three blade drivers.
3. Place rotor-shaft and blade assembly into pump case with the three vanes on the bottom. Ensure the ribs in the vanes face into the direction of rotation of the pump (see parts details on pages 18 and 19).
4. Place the remaining three vanes into the upper rotor-shaft slots facing the same direction as the first three vanes.
5. Install both sideplates into the pump simultaneously to keep the rotor-shaft level and centered in the pump case. Rotate each sideplate until the square notch is in the twelve o’clock position. Rotate the rotor-shaft to expose the seal drive pins.
6. Install the mechanical seal assemblies onto each end of the rotor-shaft. Ensure the seal drive pin properly engages the mechanical seal retainer detent. Lightly oil each carbon seal face.
7. Press the inner grease seals into each head with the cup opening toward the mechanical seal.
8. Press the main bearings into each head and install the spiral retainer ring.
9. Install the stationary seal face by applying a light oil—DO NOT use WATER based penetrants—and pressing into place with the protective cardboard disc and your fingers. Apply another coat of light oil to the face to remove any debris from installation.
10. Install the head O-ring and lubricate with light oil.
11. Carefully slide the first head assembly over the rotor shaft ensuring the rotor-shaft remains within the pump case. Install the eight 5/8" hex head bolts and torque in a crossing pattern to 45 ft•lb. Repeat for remaining head assembly.
12. Install thrust bearing assemblies onto each mounting ring and place over each end of the rotor-shaft. Ensure the needle roller assemblies are sandwiched between the thrust washers and their orientation is facing outward from the pump.
13. Press each outer grease seal into each bearing cap.
14. Place one bearing cap over the end of the rotor-shaft and bolt in place finger tight. Grasp the rotor-shaft
and ensure it does not turn by hand. Measure the gap between the head and bearing cap. Remove the bearing cap and install the measured amount of shims plus .006" (yellow shims are .020", brown shims are .010", and red shims are .002"). Round up if necessary. Install bearing cap with four 3/8" x 1 ½" bolts and lock washers and torque to 25 ft•lb.
15. Place the remaining bearing cap over the other end and again tighten the four bolts finger tight. Again, measure the gap between the head and the bearing cap and remove the bearing cap. Install the measured amount of shims plus .002" and install bearing cap as described above.
16. Ensure the pump rotates smoothly without binding. If binding occurs repeat steps 14 and 15.
17. If you have a standard bypass valve, install the O-ring into the O-ring groove in the bypass valve cap and lubricate using light oil. Install the valve, spring, guide, and cap on the pump with the four 3/8" bolts and torque to 15 ft•lbs.
18. If you have an Air Operated Valve (AOV) assembly, install the vent plate between the two diaphragms ensuring proper orientation with the screw holes in the housing. Slide the diaphragm assembly into the housing and install the diaphragm cover plate and recessed-head machine screws and tighten securely. Install this assembly with the valve, spring, and gasket to the pump using the four 3/8" bolts and lock washers and torque to 15 ft•lbs. Install both locknuts all the way down the adjustment stem and replace the retainer ring. Install the new O-ring and outer adjustment stem cap. Refer to Operation of the PZ-Series Truck Pump on page 5 for adjustment procedure.
19. Grease bearings per the instructions listed on page 6 under Pump Maintenance Schedule.
20. Install the pump according to the installation guidelines mentioned previously in chapter 1.
8
Chapter 5—Seal Replacement InstructionsCleanliness and WorkmanshipEven the smallest amount of dirt on your new seal can cause early failure. Keep all parts, tools and your hands clean while installing the seal. Never touch the smooth lapped faces of the carbon rotor or seal seat.
Lastly, your Corken pump is a precision piece of equipment with very close clearances. Treat it as such. Never use force during assembly or disassembly.
1. CAUTION: Bleed all pressure and product from the pump and piping before installing your new seal assembly.
2. Remove the PTO shaft or hydraulic drive motor, adapter, and coupling.
3. Remove the eight 5/8" hex head bolts from one head.
4. Slide one head assembly off the pump shaft ensuring the pump rotor-shaft remains in the pump.
5. Remove the mechanical seal carbon face assembly while pressing against the sideplate ensuring the rotor shaft remains within the pump case.
6. Remove the inner grease seal and stationary face by inserting a screwdriver through the head assembly from the bearing cap and tapping the grease seal and stationary face out.
7. Using the old seal stationary face, press a new inner grease seal in place ensuring the seal cup faces toward the mechanical seal. This can be accomplished with a hammer and drift.
8. Apply a light oil to the new stationary seal face O-ring and press in with your fingers ensuring the grooved side faces the main bearing.
WARNING
CAUTION: Mechanical seals are precision devices. Care must be used when handling and installing the seal seat to prevent chipping or cracking.
9. Repeat steps 3–8 for the remaining head assembly.
If vane replacement is necessary follow steps 10–16. If not proceed to step 17.
10. Using a bearing cap or flange bolt (3/8"), slide one sideplate off of the rotor-shaft while holding other end of rotor-shaft in place. Once removed, the rotor-shaft can be pulled slightly toward the remaining sideplate and allowed to rest within the pump case. Inspect the sideplates for wear. If sideplates are worn on both sides, discard for replacement.
11. Remove the rotor-shaft assembly from the pump case by cupping the bottom three vanes with your hand. This will not allow the vanes and drivers to fall from the rotor shaft slots.
9
12. Place three vanes into the upper three rotor-shaft slots. Ensure the curved tip of each vane faces radially outward.
13. While cupping these vanes in place, rotate the rotor shaft over 180° and install the vane drivers.
14. Place rotor-shaft and blade assembly into pump case with the three vanes on the bottom. Ensure the ribs in the vanes face into the direction of rotation of the pump.
15. Place the remaining three vanes into the upper rotor-shaft slots facing the same direction as the first three vanes.
16. Install both sideplates into the pump simultaneously to keep the rotor-shaft level and centered in the pump case. Rotate each sideplate until the square notch is in the twelve o’clock position. Rotate the rotor-shaft to expose the seal drive pins.
17. Install the mechanical seal assemblies onto each end of the rotor-shaft. Ensure the seal drive pin properly engages the mechanical seal retainer detent. Lightly oil each carbon seal face.
18. Lubricate the head O-ring and roll into place on the head.
19. Install each head by supporting the back end of the rotor shaft and working the head into place over the rotor-shaft.
20. Install the head bolts and torque to 45 ft•lb.
21. Grease bearings per instructions listed on page 6 under Pump Maintenance Schedule and the instructions listed below.
LubricationRegrease the bearing after thoroughly cleaning the grease opening and fittings. If dirt is forced into the bearings, early failure will result.
Special relief fittings have been provided to help prevent over-greasing the bearings. Excessive grease may drip out after lubrication. Over-greasing can damage the pump bearings and cause seal leaks.
Use only recommended ball bearing grease. If you use a hand grease gun, put the grease in slowly and stop as soon as the relief fitting opens.
Grease the U-joints and the spline of the drive shaft when greasing the pump.
10
5 .1 Repair Kits for the PZ-Series
PZ7 Repair Kit 5497-X1A6 (Buna-N)
PZ10 Repair Kit 5498-X1A6 (Buna-N)
PZ7 Repair Kit 5497-X1D6 (Viton®1)
PZ10 Repair Kit 5498-X1D6 (Viton®1)
Part Number Description Qty .
1480 Gasket 1
2-142A O-ring, Buna-N 1
2-234A O-ring, Buna-N 2
2270 Shaft key 1
2754-X Roller bearing 2
4262-X Vane driver 3
4431-XA6 Seal assembly, Buna-N 2
4432 Thrust bearing 2
4435 Thrust bearing mounting ring 2
4439 Bearing cap shim (0.002") 8
4439-1 Bearing cap shim (0.010") 2
4439-2 Bearing cap shim (0.020") 2
4441 Grease seal 2
5372 Vane 6
Part Number Description Qty .
1480 Gasket 1
2-234A O-ring, Buna-N 3
2270 Shaft key 1
2754-X Roller bearing 2
4262-X Vane driver 5
4431-XA6 Seal assembly, Buna-N 2
4432 Thrust bearing 2
4435 Thrust bearing mounting ring 2
4439 Bearing cap shim (0.002") 8
4439-1 Bearing cap shim (0.010") 2
4439-2 Bearing cap shim (0.020") 2
4441 Grease seal 2
5365 Vane 6
Part Number Description Qty .
1480 Gasket 1
2-142D O-ring, Viton ®1 1
2-234D O-ring, Viton ®1 2
2270 Shaft key 1
2754-X Roller bearing 2
4262-X Vane driver 3
4431-XD6 Seal assembly, Viton ®1 2
4432 Thrust bearing 2
4435 Thrust bearing mounting ring 2
4439 Bearing cap shim (0.002") 8
4439-1 Bearing cap shim (0.010") 2
4439-2 Bearing cap shim (0.020") 2
4441 Grease seal 2
5372 Vane 6
Part Number Description Qty .
1480 Gasket 1
2-234D O-ring, Viton ®1 3
2270 Shaft key 1
2754-X Roller bearing 2
4262-X Vane driver 5
4431-XD6 Seal assembly, Viton ®1 2
4432 Thrust bearing 2
4435 Thrust bearing mounting ring 2
4439 Bearing cap shim (0.002") 8
4439-1 Bearing cap shim (0.010") 2
4439-2 Bearing cap shim (0.020") 2
4441 Grease seal 2
5365 Vane 6
1 Registered trademark of the DuPont company.
11
Appendix A—Model Number Identification Code and Available OptionsModels PZ7 and PZ10
Appendices
A . Model Number Identification Code and Available Options
Base Model # PZ7 PZ10
Weight bare pump lbs. (kg) 98 (44) 120 (55)
Specification Fields
Strainer 1Without strainer Standard N
With strainer Optional S
Internal Bypass Valve
Standard valve Standard S
Air Operated Valve (AOV) Optional A
Bypass Valve Spring
Low (50–75 psi) Optional 1
Standard (75–100 psi) Standard 2
High (100–125 psi) Optional 3
Seal O-ring Material
Viton ®2 Standard D
Buna-N Optional A
Seal Seat Material
Silicon carbide Standard 6
Flange Options
Inlet Flange
2" NPT Standard E
2-1/2" NPT Standard J
2" BSPT Optional M
2-1/2" BSPT Optional N
2" Weld Optional F
2-1/2" Weld Optional K
Outlet Flange
2" NPT Standard E
2-1/2" NPT Standard J
2" BSPT Optional M
2-1/2" BSPT Optional N
2" Weld Optional F
2-1/2" Weld Optional K
1 Strainer is attached to the pump when specified by suffix “S” in the configurated string. When the strainer is required separate from the pump, order using the Part Number found in the Strainer Assembly table.
2 Registered trademark of the DuPont company.3 Strainer Assembly ordered by Part Number when not assembled to the pump.
Strainer Assembly 3
Strainer Assembly Part Number Seal Material
5422-XD Viton ®2 (standard)
5422-XA Buna-N (optional)
Air Operated Valve (AOV) Assembly
AOV Part Number For Pump Models
5470-X PZ7
5462-X PZ10
12
Model NumberBase X X X X X X X
Appendix B—Specifications for Models PZ7 and PZ10
B . Specifications
Material Specifications
Operating Specifications
Standard connections: 2" or 2-1/2" NPT
Optional connections: 2" or 2-1/2" Slip-on weld, BSPT
Maximum differential pressure: 125 psid (8.6 bar)
Operating temperature range: Up to 300°F (149°C)
Maximum working pressure: 200 psi (13.8 bar)
Maximum speed: 800 RPM
Fluids: For refined petroleum products and industrial solvents
Part Model Standard Material Optional Material
Case All Ductile iron ASTM A536
Head All Ductile iron ASTM A536
Flanges All Ductile iron ASTM A536
Rotor All Ductile iron ASTM A536
Bearing cap All Ductile iron ASTM A536
Sideplates All Cast iron Class 30
Vanes and vane drivers All Advanced polymer
Bypass valve All 17-4 PH stainless steel
Bypass spring All Steel
Seal seat All Silicon carbide
Seal metal parts All Steel
Shaft All 8620 steel
Thrust bearing All Steel
O-rings All Viton ®1 Buna-N
1 Registered trademark of the DuPont company.
13
Appendix C—Performance Curves for Model PZ7 1
110
100
90
80
70
60
50
400 25 50 75 100 125
420 RPM
640 RPM
800 RPM
Cap
acity
(gp
m)
Differential Pressure (psi)
575 RPM
120
1 These curves depict performance of the PUMP ONLY. Performance will vary in applications due to system design and variables. Approximate capacities and horsepowers are based on 38 SSU (3 cP) fluid.
C . Performance
Pump Speed
Differential Pressure Nominal Flowrate Brake HP Required Torque Required
RPM psi bar gpm L/min bhp kW in•lbs N•m
800 90 6.2 98 371 6.8 5.0 536 60.5
800 50 3.4 105 397 3.8 2.2 299 33.8
640 90 6.2 78 295 5.5 4.1 542 61.2
640 50 3.4 84 318 3.1 2.3 305 34.5
575 90 6.2 70 273 4.9 3.7 537 60.7
575 50 3.4 75 284 2.7 2.0 296 33.4
420 90 6.2 51 182 3.6 2.7 540 61.0
420 50 3.4 55 197 2.0 1.5 300 33.9
14
Appendix C—Performance Curves for Model PZ10 1
140
130
120
110
100
90
80
700 25 50 75 100 125
420 RPM
640 RPM
800 RPM
Cap
acity
(gp
m)
Differential Pressure (psi)
575 RPM
150
160
170
180
1 These curves depict performance of the PUMP ONLY. Performance will vary in applications due to system design and variables. Approximate capacities and horsepowers are based on 38 SSU (3 cP) fluid.
Pump Speed
Differential Pressure Nominal Flowrate Brake HP Required Torque Required
RPM psi bar gpm L/min bhp kW in•lbs N•m
800 90 6.2 152 575 10.3 7.7 811 91.7
800 50 3.4 161 609 5.7 4.3 449 50.7
640 90 6.2 121 458 8.2 6.1 808 91.2
640 50 3.4 128 485 4.6 3.4 453 51.2
575 90 6.2 109 413 7.3 5.4 800 90.4
575 50 3.4 115 435 4.1 3.1 449 50.8
420 90 6.2 80 303 5.4 4.0 810 91.6
420 50 3.4 85 321 3.0 2.2 450 50.9
15
D . Outline Dimensions
All dimensions are in inches (centimeters).
Appendix D—Outline Dimensions for Model PZ7
1/4" Keyway
1/4" Keyway
PZ7 with Standard Bypass Valve
PZ7 with Air Operated Valve (AOV)
16
All dimensions are in inches (centimeters).
Appendix D—Outline Dimensions for Model PZ10
PZ10 with Standard Bypass Valve
PZ10 with Air Operated Valve (AOV)
17
Appendix D—Outline Dimensions for Air Operated Valve and Strainer
All dimensions are in inches (centimeters).
5470-X Air Operated Valve (AOV) for PZ7 Pump
5462-X Air Operated Valve (AOV) for the PZ10 Pump
5422-X_ Strainer Assembly for the PZ7 and PZ10 Pump
3.25(8.26)
3.25(8.26)
3.25(8.26)
4.25(10.79)
3.75(9.52)
3.75(9.52)
3.75(9.52)
4.48(11.30)
18
Appendix E—Parts Details for Model PZ7 with Standard Bypass Valve
E . Parts Details
WARNING
CAUTION: Always relieve pressure in the unit before attempting any repairs.
25. 2-234_ a O-ring 226. 7001-050NC150A Hex head bolt 827. 3442 Pipe plug (1/4" NPT) 528. 7001-043NC125A Hex head bolt 1629. 2397-1 Name plate 130. 7012-006SF019E Pan head Phillip (6-32 x 3/16") 631. 1359 Lubrication plate 232. 4985 d Shaft cover 133. 7012-010SF050E Pan head Phillip (10-24 x 1/2") 234. 2270 Shaft key 135. 5454 Bypass valve 1
36.5477 Bypass valve spring (50–75 psi) 15407 Bypass valve spring (75–100 psi) 15480 Bypass valve spring (100–125 psi) 1
37. 5447 Bypass valve spring guide 138. 5446 Bypass valve cap 139. 5505 Adjustment set screw 140. 1480 Gasket 141. 2458 Adjustment set screw cap 142. 7001-037NC075A Hex head bolt 443. 2-142_ a O-ring 1
Material CodeA Buna-ND Viton ®c
a _ denotes material code. See material chart for details.b Available with all 4431-X_6 seal assemblies or sold separately.c Registered trademark of the DuPont company.d Shaft cover may be installed on either side of the pump.
21
19
Appendix E—Parts Details for Model PZ10 with Standard Bypass Valve
WARNING
CAUTION: Always relieve pressure in the unit before attempting any repairs.
25. 2-234_ a O-ring 326. 7001-050NC150A Hex head bolt 827. 3442 Pipe plug (1/4" NPT) 528. 7001-043NC125A Hex head bolt 1629. 2397-1 Name plate 130. 7012-006SF019E Pan head Phillip (6-32 x 3/16") 631. 1359 Lubrication plate 232. 4985 d Shaft cover 133. 7012-010SF050E Pan head Phillip (10-24 x 1/2") 234. 2270 Shaft key 135. 5373 Bypass valve 1
36.5481 Bypass valve spring (50 –75 psi) 15360 Bypass valve spring (75–100 psi) 15482 Bypass valve spring (100–125 psi) 1
37. 5364 Bypass valve spring guide 138. 5409 Bypass valve cap 139. 5504 Adjustment set screw 140. 1480 Gasket 141. 2458 Adjustment set screw cap 142. 7001-037NC125A Hex head bolt 4
Material CodeA Buna-ND Viton ®c
a _ denotes material code. See material chart for details.b Available with all 4431-X_6 seal assemblies or sold separately.c Registered trademark of the DuPont company.d Shaft cover may be installed on either side of the pump.
20
Appendix E—Parts Details for Model PZ7 Air Operated Valve (AOV)5470-X AOV Assembly for Model PZ7
Ref No . Part No . Description Qty .
1. 7001-037NC225A Hex head bolt 42. 7206-037A Lock washer 0.375" 43. 5457 AOV adjustment stem cap 14. 5471-X a AOV adjustment stem retainer ring 15. 5471-X a Hex nut 36. 5471-X a AOV adjustment stem 17. 5459 AOV low flow adjustment bushing 18. 5471-X a O-ring 19. 5470 AOV housing 1
Ref No . Part No . Description Qty .
10. 2854 Threaded pipe plug 111. 5471-X a Lock washer 0.3125" 112. 5471-X a AOV disc 213. 5471-X a AOV diaphragm 214. 5464 AOV intermediate plate 115. 5465 AOV diaphragm cover 116. 5471-X a Diaphragm valve disc 117. 5460 #10-24 x 1 flat head cap screw 218. 5472 b AOV gasket 1
a Not sold separately. Only available with the 5471-X Air Operated Valve (AOV) diaphragm assembly.b Available with the 5471-X AOV diaphragm assembly or sold separately.
1
2
3
4
5
6
7
8
9
5
11
11
12
13
14
12
13
15
16
17
18
21
Appendix E—Parts Details for Model PZ10 Air Operated Valve (AOV)5462-X AOV Assembly for Model PZ10
Ref No . Part No . Description Qty .
1. 7001-037NC275A Hex head bolt 42. 7206-037A Lock washer 0.375" 43. 5457 AOV adjustment stem cap 14. 5466-X a AOV adjustment stem retainer ring 15. 5466-X a Hex nut 36. 5466-X a AOV adjustment stem 17. 5459 AOV low flow adjustment bushing 18. 5466-X a O-ring 19. 5462 AOV housing 1
Ref No . Part No . Description Qty .
10. 2854 Threaded pipe plug 111. 5466-X a Lock washer 0.3125" 112. 5466-X a AOV disc 213. 5466-X a AOV diaphragm 214. 5461 AOV intermediate plate 115. 5463 AOV diaphragm cover 116. 5460 #10-24 x 1 flat head cap screw 217. 5466-X a Diaphragm valve disc 118. 5467 b AOV gasket 1
a Not sold separately. Only available with the 5466-X Air Operated Valve (AOV) diaphragm assembly.b Available with the 5466-X AOV diaphragm assembly or sold separately.
4
1
2
3
5
6
7
8
9
5
11
10
12
13
14
12
13
15
16
17
18
22
Appendix E—Parts Details for Strainer5422-X_ a Strainer Assembly for Models PZ7 and PZ10
Ref No . Part No . Description Qty .
1. 7001-050NC100A Hex head bolt 82. 5423 Strainer body cap 13. 2-234_ a O-ring 24. 5433 Strainer basket 15. 5422 Strainer body 1
a _ denotes material code. See material chart for details.b Registered trademark of the DuPont company.
Material CodeA Buna-ND Viton ®c
23
F . Troubleshooting Guide
Appendix F—Troubleshooting Guide
Symptom Probable Cause Remedy
Low capacity Pump speed too slow Check engine speed and PTO ratio. Consult pump performance curve. Use tachometer on pump if speed is questionable.
High differential pressure Restriction in discharge piping or hose too small. Vapor equalization lines too small or not used.
Clogged strainer Clean strainer.
Suction pipe too small or restricted
Indicated by pump inlet pressure dropping several pounds when pump is started. Remove restriction or modify piping.
Worn vanes Replace.
Worn sideplates Reverse or replace sideplates. Check universal drive assembly to make sure angularity is within limits, yokes are parallel and slip-joint is greased. Check bearings.
Vanes sticking Remove vanes and clean out foreign matter (check strainer). Replace vanes if swollen.
Pump runs but no flow
Valve closed Check valves. Make sure tank valve is open! Refer to manufacturer’s instructions.
Broken shaft Disassemble and inspect pump. Repair if necessary.
Defective meter Service meter.
Pump will not turn or is locked up
Foreign matter in pump Clean out the pump and check strainer in suction line
Vanes broken Clean out pump carefully and replace vanes. Has pump been operated dry? Then, check for damage to cam and rotor shaft assembly.
Bearing seized Replace pump bearings. Grease monthly. Use ball bearing grease manufactured for intended service.
Moisture frozen in pump Let thaw and break loose carefully.
Check valve or set valve for higher pressure—see instructions.
Worn vanes and/or sideplates
Disassemble, inspect, and repair as necessary. Has pump been run dry? If so, check for damage to vanes and rotor shaft assembly.
Pump is noisy Cavitation from poor suction conditions
Clean inlet strainer. Increase pipe size.
Vanes sticking Remove vanes and clean out foreign material (check strainer). Replace vanes if swollen.
Bearings worn Replace if necessary and grease monthly.
Very high differential pressure
Check for restriction in discharge line. Delivery hose too small pressure and too long. Slow down pump!
Check vapor release float assembly on meter air eliminator and meter differential valve.
PTO shaft vibration Inspect and repair driveline component.
Pump leaks around shaft
Seal or O-rings failed Inspect seal assembly and replace if necessary. Keep new seal very clean when replacing seal. Recommend a light oil film on O-rings. Has pump been run dry? If so check for damage to vanes and rotor shaft assembly.
In diagnosing pump and system troubles, record the following data during product transfers:
1. Pressure at pump suction.
2. Pressure at pump discharge.
3. Pipe size and length of suction and discharge lines.
4. Pump speed if practical.
24
G . Extended Storage
Appendix G—Extended Storage ProceduresIf the PZ-Series pump is to be removed from service for some time, the pump must be protected. Piping and tanks not in service should also be protected, as the rust particles can destroy the pump’s seals almost immediately after start-up.
1. Fill or thoroughly flush the pump with a light rust inhibiting oil. If the pump is flushed with oil, place some desiccant packets inside the pump for added protection.
2. Plug all pump openings.
3. Store in a dry location.
4. Before placing the pump back into service, drain the oil and remove any desiccant packets.
5. Refer to “Operation” on page 5 of this Installation, Operation and Maintenance (IOM) manual.
